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Variable Valency

8. Simplest w...

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8. Simplest way to calculate valency of compounds?

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Faster and smarter way to learn valency of elements and radical

Q. The valencies of p block elements are equal to group number or 8 minus the group number. Therefore they show one lower valency and one higher valency. However, if we go to the bottom elements of any group, the compounds with lower valency are predominant whereas higher valency becomes rather uncommon. Explain.

Q. The simplest way to check whether a system is colloidal is by __________.

Octet rule states that elements tend to combine in such a way that each atom has eight electrons in its valence shell. Why only 8 electrons?

A compound is formed by 24 g of X and 64 g of oxygen. If atomic mass of X = 12 and O = 16, calculate the simplest formula for the compound.

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Variable Valency

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